:root{--bg: #ffffff;--sidebar-bg: #f0f2f6;--text: #31333f;--muted-text: #6b7280;--border: #e6e6e6;--primary: #ff4b4b;--primary-hover: #ff3333;--info-bg: #e8f4fd;--info-text: #0c5c8f;--error-bg: #fdecec;--error-text: #b3261e;--radius: 8px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Source Sans Pro,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px}button{font-family:inherit}hr{border:none;border-top:1px solid var(--border);margin:12px 0}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.login-card{width:100%;max-width:400px}.login-card h1{margin-bottom:4px;font-size:2rem}.login-caption{color:var(--muted-text);margin-bottom:24px}.field-label{display:block;font-size:.9rem;margin:12px 0 4px}.text-input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;background:var(--bg);color:var(--text)}.text-input:focus{outline:2px solid var(--primary);outline-offset:-1px}.btn{border:1px solid var(--border);border-radius:var(--radius);padding:8px 16px;font-size:.95rem;cursor:pointer;background:var(--bg);color:var(--text);transition:border-color .15s ease,color .15s ease,background .15s ease}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-block{width:100%;display:block;margin-top:16px}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.alert{border-radius:var(--radius);padding:12px 16px;margin:8px 0;font-size:.9rem}.alert-info{background:var(--info-bg);color:var(--info-text)}.alert-error{background:var(--error-bg);color:var(--error-text)}.empty-state ul{margin:4px 0 0;padding-left:20px}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:300px;flex-shrink:0;background:var(--sidebar-bg);padding:20px 16px;overflow-y:auto}.sidebar-heading{font-size:.95rem;text-transform:none;margin:12px 0}.user-badge-caption{display:block;font-size:.85rem;color:var(--muted-text);margin-bottom:8px}.muted-caption{color:var(--muted-text);font-size:.85rem}.radius-control{margin:16px 0}.radius-control label{display:block;font-size:.85rem;margin-bottom:6px;color:var(--muted-text)}.radius-control input[type=range]{width:100%;accent-color:var(--primary)}.radius-value{font-size:.8rem;color:var(--muted-text)}.session-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.session-item{display:flex;align-items:center;gap:4px}.session-select{flex:1;text-align:left;background:transparent;border:1px solid transparent;border-radius:var(--radius);padding:8px 10px;cursor:pointer;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-select:hover{background:#e3e6ec}.session-item.active .session-select{background:#fff;border-color:var(--border);font-weight:600}.session-delete{background:transparent;border:none;cursor:pointer;color:var(--muted-text);padding:4px 8px;border-radius:var(--radius)}.session-delete:hover{color:var(--error-text);background:#ffe4e4}.chat-main{flex:1;display:flex;flex-direction:column;padding:24px 32px;min-width:0;min-height:0}.page-title{margin:0 0 4px;font-size:2rem}.page-caption{margin:0 0 20px;color:var(--muted-text)}.chat-scroll{flex:1;overflow-y:auto;padding-bottom:16px}.chat-message{display:flex;gap:12px;margin-bottom:20px;align-items:flex-start}.chat-avatar{width:32px;height:32px;border-radius:50%;background:var(--sidebar-bg);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}.chat-bubble-col{flex:1;min-width:0}.chat-bubble{white-space:pre-wrap;line-height:1.5}.status-caption{color:var(--muted-text);font-size:.9rem;margin-bottom:6px}.data-divider{margin:16px 0}.data-card{border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:10px}.data-card-title{margin:0 0 12px}.section-caption{color:var(--muted-text);font-size:.85rem;margin:12px 0 4px}.metrics-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:8px}.metrics-row-3{grid-template-columns:repeat(3,minmax(0,1fr))}.metric{border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px}.metric-label{font-size:.8rem;color:var(--muted-text)}.metric-value{font-size:1.4rem;font-weight:600}.metric-delta{font-size:.8rem;margin-top:2px}.metric-delta.up{color:#1a7f37}.metric-delta.down{color:#b3261e}.expander{border:1px solid var(--border);border-radius:var(--radius);margin-top:12px;padding:4px 12px}.expander summary{cursor:pointer;padding:8px 0;font-weight:600}.table-wrap{overflow-x:auto;margin:8px 0 12px}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--border);white-space:nowrap}.report-download{margin-top:16px}.chat-input-bar{display:flex;gap:8px;align-items:flex-end;border-top:1px solid var(--border);padding-top:12px}.chat-input{flex:1;resize:none;padding:10px 14px;border:1px solid var(--border);border-radius:20px;font-size:1rem;font-family:inherit;max-height:160px;background:var(--bg);color:var(--text)}.chat-input:focus{outline:2px solid var(--primary);outline-offset:-1px}.chat-send{border-radius:20px}.full-page-loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--muted-text)}@media (max-width: 720px){.app-layout{flex-direction:column}.sidebar{width:auto}.chat-main{padding:16px}.metrics-row-3{grid-template-columns:repeat(2,minmax(0,1fr))}}